Power-applying means



Nov- 4 a R. D. E AGLESFIELD POWER APPLYING MEANS Filed April 17, 1922 TIE 2 M ATTORNEY.

Patented Nov. 4, 1924.

i'rsn STAT ROBERT D. EAGLESFIELD, OF INDIANAPOLIS, INDIANA.

POWER-APPLYING MEANS.

Application fi ed April 17, 1922.

To all whom it may concern:

Beit known that I, ROBERT D. EAoLns- FIELD, a citizen of the United States, res ding at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Improvements in Power-rip plying Means, of which the following is a specification.

This invention relates to power applying means and is designed primarily for use in connection with what is known as cut-off saws, although it will be understood that it may be applied or used for any desired purpose, such as operating grinders and other devices where it is necessary to move the saw or other tool and parts carrying the same toward the object to be operated upon. The prime feature of the invention is in mounting an electrically driven motor upon a shaft or arbor to which the saw or other tool is attached, the rotor of the motor being power applying means.

A further feature of the invention is the provision of means for adjusting the motor vertically for accommodating saws of different diameters.

Other objects and advantages will be hereinafter more fully set forth and pointed out in the accompanying specification.

Figure 1 is an elevation of a cut-oifsaw showing the same attached to a swinging frame suspended by brackets,

Figure 2 is a side elevation thereof,

Figure 3 is a sectional view as seen on line 33, Figure 2, and

Figure 4 is a sectional view as seen on line 4l4 Figure 3.

Referring to the drawings, 1 indicates a shaft or arbor to one end of which is attached a saw 2, which may be of any preferred design or construction, and of that class commonly designated as cut-0E saws wherein the saw is tobe moved substantially transversely of the timber being sawed.

The common practice of operating saws of this nature has been to mount the shaft in a swinging movable frame and apply power thereto through the medium of a belt and owing to the changing position of the saw structure under certain conditions of usage, considerable difficulty has been encountered in maintaining the belting sufficiently taut to cause the same to operate the saw.

Serial No. 554,294.

To overcome these objectionable features and at the same time obtain a more direct and positive drive, the shaft 1 is passed through a motor 3, the rotor 4 of the motor being fixed to the shaft, consequently the drive is direct and the requirement of belt ing and other devices for operating the saw is dispensed with.

Any suitable means may be provided for mounting the saw construction, but in the present instance the motor is suspended from a column or bar 5, Jreferably channel shape in cross section, the upper end of the column being adjustably connected to a head 6, which head is in turn pivoted to brackets or hangers 7. The head 6 is also preferably channel shape and a plate 8 is fastened to one face thereof to form a pocket for the reception of the upper end of the column 5. A bolt 9 is extended downwardly through the top flange of the head 6 and through an car 10 on the column 5'into engagement with a nut 11, and by rotating the bolt 9 the column 5 may be shortened or lengthened to accommodate saws of larger or smaller diameters.

In operating this form of device, after the motor has been started the frame 5 is swung towards the object to be sawed, the swinging movement being continued until the saw has been passed entirely through the object. If a larger saw is to be used, the bolts 12, employed for clamping the plate 8 onto the head 6, are slightly loosened, when the bolt 9 is rotated and the column 5 elevated until the periphery of the larger saw is in proper relation with the object to be sawed, after which the bolts 12 are again tightened.

By applying the drive direct to the shafts supporting the saw, heavier pieces of timber can be sawed than would be possible with a belt driven saw, as with the present device the drive is absolutely positive, while with a belt drive a severe strain on the saw would cause the belt to slip and consequently lose its driving force.

, Although the device is shown and described as operating a cut-off saw, it will be clearly understood that a grinder or other device, which is to be operated by rotation, and moved into operative position in the same manner, may be attached to the shaft or arbor and driven by the motor.

Having thus fully described my said invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a cut-off saw, a pair of spaced bearings, a head swingably supported thereby said head comprising a relatively Wide and shallow channel-iron having a horizontal flange at the top and tapering downward toward a pair of parallel side flanges, a relatively wide and shallow channel-bar guided by said side flanges for adjustment up and down said channel bar having a horizontal flange at the top, a cross-bar extending over the side flanges of the channel iron and se cured thereto to provide a pocket through which the channel bar can move, a bolt having its head resting on the first-named horizontal flange, and a nuttherefor beneath the second horizontal flange said channel bar,

supporting at its lower end a rotary sawshaft andmeans for driving the same, substantially as set forth.

I 2. In combination, a pair of spacedbearings, a head swingably journaled therein, a depending channel bar having front and side portions slidably engaging similar parts on said head, abolt passing through ledges at the upper ends of said head and channel 15th-day of April, A. D. nineteen hundred and twenty-two.

RGBERT n. EAGLEsFInLn- [n a Witnesses CAREY S. FRYE, CARROLL FRYE. 

